wicket maven dependency

[dvd]

Hello:
A dumb question. I tried to build wicket from its source (say 1.3.3) (thinking 
about working on wicket) and realized that several dependent artifacts such as 
slf4j ,portlet were not on repo1.maven.org.  Does wicket team (or 
anyone building from source) have to install those locally or is there larger 
maven repo that I could  use?  I can install them locally but just incase there 
are easier ways.
Thanks